$(function(){
            $("#aaa").click(function(){
                var text = $("#aaa").text();
                if(text == "更多"){
                    $("#aaa").html("简化");
                    $("li[class=no]").show();
                }else{
                    $("#aaa").html("更多");
                    $("li[class=no]").hide();
                }
            });
        });